The Cookbook Nook is hosting Crystal Cove's upcoming Grill Fest, which pits local amateur chefs against one another. This year's challenge: grilled cheese. But with chefs bearing grudges from past years, more mouths are running off than savoring the fare. When the eight-time champ is found murdered behind the café, and a local diner owner is suspected of bumping off the competition, Jenna Hart has to douse the flames before the wrong person gets burned.